1996
DOI: 10.1002/(sici)1098-2787(1996)15:3<139::aid-mas1>3.0.co;2-j
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Time-of-flight mass spectrometry: State-of the-art in chemical analysis and molecular science

Abstract: Time‐of‐flight instruments form a well‐established group of mass spectrometers, with its popularity still increasing. This article gives a survey of the technical basics and important instrumental developments in this field. Special notice is taken of factors that limit the mass resolution and to techniques to overcome them. The possibilities to perform tandem MS experiments in flight‐time mass analyzers and their combination with ion‐trapping devices are discussed. Finally, some examples of the modern applica… Show more

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Cited by 71 publications
(38 citation statements)
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“…Instruments composed of two or more coupled mass analyzers are known as tandem mass spectrometers. The TOF approach consists of a high vacuum tube in which the ions, accelerated with equal energies, travel along the tube at different velocities, which are inversely proportional to the masses of the ions (Weickhardt et al, 1996). Ions with smaller m / z values will reach the detector sooner than those with higher m / z values.…”
Section: Mass Spectrometrymentioning
confidence: 99%
“…Instruments composed of two or more coupled mass analyzers are known as tandem mass spectrometers. The TOF approach consists of a high vacuum tube in which the ions, accelerated with equal energies, travel along the tube at different velocities, which are inversely proportional to the masses of the ions (Weickhardt et al, 1996). Ions with smaller m / z values will reach the detector sooner than those with higher m / z values.…”
Section: Mass Spectrometrymentioning
confidence: 99%
“…The vacuum in the flight tube is such that the chance of molecule collision with each other or with the flight tube is very low. As the peptides generated in MALDI are equally charged, they traverse flight tube with different velocities, which are inversely proportional to their masses 58 and hit the detector at different time intervals 4 . Lighter ions land at the detector faster than the higher ones separating the ions of different masses.…”
Section: Tof (Time-of-flight)mentioning
confidence: 99%
“…Electric fields are used to reverse the direction of travel of the ions halfway through their flight. As ions with a velocity higher than intended for their m/z penetrate deeper into the reflectron, the reflection time is increased, so the otherwise shortening of their time of flight is largely cancelled out, providing the electric fields are tuned correctly (Weickhardt et al, 1996). An advantage of this over PSPF is that providing it is correctly tuned, the increase in resolution benefits the ions of all m/z.…”
Section: Mass Spectrometer Typesmentioning
confidence: 99%